WSO2 DSS 3.5.0 - DataService Task Class error - wso2

Question

I'm currently working on WSO2 DSS 3.5.0, trying to follow this example:
https://itsmeisuru.wordpress.com/2013/11/29/wso2-dss-scheduled-task-example/
I've created the JAR file of a simple java class that implement "DataTask".
It put this JAR in the repository DSS_HOME/repository/components/lib like it's said in step 2 of the example.
Then, when I create the schedule task like in the step 6.
I have the following error in my server console:
INFO {org.quartz.core.JobRunShell} - Job
TENANT_-1234_TYPE_DATA_SERVICE_TASK.ScheduleTest threw a
JobExecutionException: org.quartz.JobExecutionException: Error in
executing task: Error in initializing Data Task: sample.Test cannot be
found by org.wso2.carbon.dataservices.task_4.3.4 [See nested
exception: java.lang.RuntimeException: Error in initializing Data
Task: sample.Test cannot be found by
org.wso2.carbon.dataservices.task_4.3.4] at
org.wso2.carbon.ntask.core.impl.TaskQuartzJobAdapter.execute(TaskQuartzJobAdapter.java:74)
at org.quartz.core.JobRunShell.run(JobRunShell.java:213) at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266) at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745) Caused by:
java.lang.RuntimeException: Error in initializing Data Task:
sample.Test cannot be found by org.wso2.carbon.dataservices.task_4.3.4
at
org.wso2.carbon.dataservices.task.DSTaskExt.init(DSTaskExt.java:42)
at
org.wso2.carbon.ntask.core.impl.TaskQuartzJobAdapter.execute(TaskQuartzJobAdapter.java:66)
... 6 more Caused by: java.lang.ClassNotFoundException: sample.Test
cannot be found by org.wso2.carbon.dataservices.task_4.3.4 at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at
java.lang.Class.forName0(Native Method) at
java.lang.Class.forName(Class.java:264) at
org.wso2.carbon.dataservices.task.DSTaskExt.init(DSTaskExt.java:36)
... 7 more
Note that my package name is "sample" and the name of my java class is "Test".
It looks like the scheduled task doesn't retrieve the class I indicate in the field "DataService Task Class".
Has anybody already had the same problem?
I also tried to used the JAR generated in the example as it's provided in the step 2. Then I follow the very same other steps. Finally I have the same problem:
[classpath] cannot be found by org.wso2.carbon.dataservices.task_4.3.4

Answer 1

This is a known issue in DSS 3.5.0. The related JIRA can be found from here. This is fixed and the fix will be available in the upcoming release 3.5.1. The planned date for the 3.5.1 release is mid of July 2016. Please note that this can be changed due to certain circumstances.